#include <iostream>
#include <windows.h>
#include <stdlib.h>
using namespace std;
const int N = 100000000;
int a[N], sum1,sum2,sum3,sum4,sum;
void init(int n)
{
 for (int i = 0; i < n; i++)
 {
  a[i] = 1;
 }
}
int main()
{
 long long head, tail, freq; // timers
 // similar to CLOCKS_PER_SEC
 init(N);
 QueryPerformanceFrequency((LARGE_INTEGER*)&freq);
 // start time
 QueryPerformanceCounter((LARGE_INTEGER*)&head);
 sum1 = 0; sum2 = 0; sum3 = 0; sum4 = 0;
 for (int i = 0; i < N; i += 4) {
  sum1 += a[i];
  sum2 += a[i + 1];
  sum3 += a[i + 2];
  sum4 += a[i + 3];
 }
 sum = sum1 + sum2 + sum3 + sum4;
 // end time
 QueryPerformanceCounter((LARGE_INTEGER*)&tail);
 cout << "Col:" << (tail - head) * 1000.0 / freq << "ms" << endl;
 return 0;
}